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Finding the Fourth Proportional to 321,840.20, 482,760.30 and 204,033.80

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Solution

The fourth proportional to 321,840.20, 482,760.30 and 204,033.80 is: 306,050.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,840.20 : 482,760.30 = 204,033.80 : x
  2. Step 2: Convert to fraction form
    321,840.20/482,760.30 = 204,033.80/x
  3. Step 3: Cross multiply
    321,840.20x = 482,760.30 × 204,033.80
  4. Step 4: Simplify right side
    321,840.20x = 98,499,418,498.14
  5. Step 5: Solve for x
    x = 98,499,418,498.14/321,840.20
  6. Step 6: Final answer
    x = 306,050.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.